# Proposed AD 2003-NM-104-AD: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-13-16
- Products: Embraer
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 5, 2004, 69 FR 10360
- Comments due: April 5, 2004
- Became: [AD 2004-13-16](https://openairdocs.org/ad/2004-13-16)
- Docket: 2003-NM-104-AD
- FR document: 04-4930
- Official PDF: https://openairdocs.org/files/sha256/5a/9e/5a9ee17f31fc3cf43b61426f279b3ef5bdc3e80dfc0a4a7c0faf91a7184a6bb2 (from https://www.govinfo.gov/content/pkg/FR-2004-03-05/pdf/04-4930.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/03/05/04-4930/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/76E364A879ED70FF86256E4E005A26BD.0001
- Page: https://openairdocs.org/proposed/2003-NM-104-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to all Model EMB-135 and -145 series airplanes, that currently requires repetitive inspections of the engine thrust reverser stow/transit switches, and corrective action, if necessary. This action would continue to require the existing requirements and would identify the installation of certain new transit switches, which would constitute terminating action for the repetitive inspections. This action would also reduce the applicability. The actions specified by the proposed AD are intended to prevent erroneous signals in the Engine Indicating and Crew Alerting System (EICAS) caused by internal corrosion of the thrust reverser stow/transit switches, which could result in uncommanded loss of engine power in flight, or unnecessary aborted takeoffs on the ground. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Mar 5, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-4930, comments due Apr 5, 2004 (https://www.federalregister.gov/documents/2004/03/05/04-4930/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-135-and--145-series)

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